familyPoaceae
subfamilyPoaceae subfam. Pooideae
tribePoaceae tribe Poeae
genusKoeleria
speciesKoeleria pyramidata

Koeleria pyramidata

(Lam.) P. Beauv.
Lisa A. Standley
Common names: Crested hairgrass
Introduced
Treatment appears in FNA Volume 24. Treatment on page 754.
Please click on the illustration for a higher resolution version.
Illustrator: Cindy Roché

Copyright: Utah State University

Plants loosely cespitose, sometimes rhizomatous. Culms (30) 40-90 cm, glabrous or puberulent above. Sheaths sparsely sericeous to densely pubescent, old sheaths persistent, disintegrating into wavy, curled, or arched fibers; ligules 0.5-1 mm; blades 5-24 cm long, 1-5 mm wide, flat, margins of the basal blades often ciliate below, with hairs usually longer than 2 mm. Panicles 5-22 cm long, 1-4 (5) cm wide; branches villous. Spikelets 6-10 mm, with 2-4 (5) florets; rachillas with scattered pubescence. Glumes acute, glabrous, smooth or scabrous; lower glumes 4-5 mm, 1-veined; upper glumes 5-6.5 mm, 3-veined; calluses broadly rounded, pubescent; lemmas 4-6 mm, glabrous or puberulent, rarely ciliate, usually green when young, stramineous at maturity, apices acuminate to shortly aristate; anthers 2-2.5 mm. Caryopses 2.5-3.8 mm. 2n = 14.

Discussion

Koeleria pyramidata, as interpreted here, is confined to Europe. Some North American records for K. pyramidata are based on robust specimens of K. macrantha; others reflect an interpretation of K. pyramidata that includes K. macrantha.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Koeleria pyramidata"
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2n chromosome quantity
14 +
Abaxial ligule presence
absent +
Abaxial ligule quantity
common +
Adaxial cell presence
absent +
Adaxial cell shape
bulliform +
Adaxial ligule architecture or pubescence or shape
ciliate +
Adaxial ligule presence
absent +
Adaxial ligule texture
membranous +  and scarious +
Anther quantity
3 +
Anther some measurement
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Apex shape
acuminate +  and shortly aristate +
Arm cell presence
absent +
Auricle presence
absent +
Author
Lisa A. Standley +
Authority
(Lam.) P. Beauv. +
Awn atypical quantity
1 (?) +  and 3 (?) +
Awn course
straight +
Awn orientation
arising +
Awn position
basal +  and terminal +
Awn quantity
single +
Awn shape
bent +
Back shape
keeled +  and rounded +
Basal floret quantity
1 +  and 2 +
Base architecture
pseudopetiolate +  and branching +
Base arrangement
close +
Base fusion
free +
Base position
intravaginal +, extravaginal +, branching +  and basal +
Base size
swelling +
Base texture
hard +
Base width
thick +
Blade arrangement
parallel +
Blade arrangement or course or shape
linear +
Blade length
5 cm50 mm <br />0.05 m <br /> (24 cm240 mm <br />0.24 m <br />) +
Blade prominence
not evident +
Blade prominence or shape
flat +
Blade pubescence
glabrous +  and pubescent +
Blade shape
flat +  and involute +
Blade width
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Branch pubescence
villous +
Branch shape
spikelike +
Callus development
developed +
Callus pubescence
pubescent +
Callus shape
rounded +
Common name
Crested hairgrass +
Culm architecture
not branching +
Culm architecture or arrangement or growth form
solitary +
Culm atypical some measurement
30 +
Culm duration
annual +
Culm growth form
climbing +
Culm growth form or location
floating +
Culm orientation
erect +
Culm pubescence
puberulent +  and glabrous +
Culm some measurement
40 cm400 mm <br />0.4 m <br /> (90 cm900 mm <br />0.9 m <br />) +
Culm texture
not woody +
Distal floret size
reduced +
Distribution
Wash. +, Del. +, Wis. +, Pacific Islands (Hawaii) +, Maine +, Vt. +, Wyo. +, N.Mex. +, Tex. +, La. +, N.Y. +, Pa. +, Alaska +, Nev. +, Colo. +, Calif. +, Ala. +, Kans. +, N.Dak. +, Nebr. +, Okla. +, S.Dak. +, Ark. +, Ill. +, Ind. +, Iowa +, Ariz. +, Idaho +, Md. +, Ohio +, Utah +, Mo. +, Minn. +, Mich. +, Mont. +, Miss. +, Ky. +, Alta. +, B.C. +, Man. +, N.W.T. +, Ont. +, Que. +, Sask. +, Yukon +  and Oreg. +
Embryo quantity
1/4 +  and 1/3 +
Endosperm texture
liquid +, soft +  and hard +
Fiber shape
arched +, curled +  and wavy +
Filament shape
capillary +
Floret architecture
pistillate +  and staminate +
Floret arrangement
adjacent +
Floret atypical quantity
5 +
Floret length or size
sometimes longer +
Floret position or shape
distal +
Floret prominence
vestigial +
Floret quantity
2 +  and 4 +
Floret reproduction
sterile +  and bisexual +
Floret shape
compressed +
Floret size
reduced +
Glume architecture or pubescence or relief
smooth +
Glume architecture or shape
awned +
Glume height or length or size
shorter +
Glume length or size
shorter or longer +
Glume position
subtending +
Glume presence
absent +
Glume pubescence
glabrous +
Glume pubescence or relief
scabrous +
Glume quantity
2 +
Glume shape
acute +
Glume size
subequal +
Glume texture
membranous +
Glume variability
equal +
Hair shape
uncinate +
Hair some measurement
2 cm20 mm <br />0.02 m <br /> (?) +
Hilum arrangement or course or shape
linear +
Hilum coloration or relief
punctate +
Hilum shape
Ovate (?) +
Illustration
Present +
Illustration copyright
Utah State University +
Illustrator
Cindy Roché +
Inflorescence architecture
compound +
Inflorescence position or structure subtype
terminal +
Inflorescences panicle shape
pyramidal +  and spikelike +
Internode architecture
hollow +
Internode presence
absent +
Keel architecture or pubescence or shape
ciliate +
Layer presence
absent +
Leaf arrangement
distichous +
Leaf margin arrangement
Overlapping (?) +
Lemma architecture
5-veined +
Lemma architecture or pubescence or shape
ciliate +
Lemma architecture or shape
awned +
Lemma coloration
stramineous +  and green +
Lemma height or length or size
shorter +
Lemma length or size
longer +
Lemma pubescence
puberulent +  and glabrous +
Lemma shape
lanceolate +  and ovate +
Lemma some measurement
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Lemma texture
membranous +
Lemma width
thin +
Ligule presence
absent +
Ligule some measurement
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Ligule texture
membranous +
Lodicule architecture
veined +
Lodicule architecture or pubescence or shape
ciliate +
Lodicule architecture or shape
truncate +
Lodicule prominence
inconspicuous +
Lodicule pubescence
glabrous +
Lodicule quantity
2 +
Lodicule shape
toothed +
Lodicule texture
membranous +
Lower glume architecture
1-veined +
Lower glume height or length or size
somewhat narrower and shorter +
Lower glume some measurement
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Lower glume width
narrower +
Margin architecture or pubescence or shape
ciliate +
Margin texture
scarious +
Midrib architecture
simple +
Node prominence
concealed +  and prominent +
Number of lower taxa
0 +
Other quantity
2 +  and 1 +
Ovary presence
absent +
Ovary pubescence
glabrous +
Palea coloration
hyaline +
Palea development
well-developed +
Palea presence
absent +
Palea shape
2-keeled +
Palea size
subequal +
Palea variability
equaling +
Panicle length
5cm +  and 22cm +
Panicle shape
spikelike +
Panicle size
reduced +
Panicle width
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Papilla presence
absent +
Pericarp arrangement
separating +
Pericarp condition or texture
dry +
Pericarp texture
dry +  and fleshy +
Pericarp width
thin +
Pseudopetiole development
not developed +
Pseudopetiole presence
absent +
Rachilla length
prolonged +
Rachilla pubescence
pubescent +  and glabrous +
Rachis prominence
evident +
Reference
None +
Sheath architecture
open +
Sheath condition
closed +
Sheath dehiscence
disintegrating +
Sheath duration
persistent +
Sheath length
open +
Sheath life cycle
old +
Sheath pubescence
sparsely sericeous +  and densely pubescent +
Source xml
https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V24/V24 1069.xml +
Special status
Introduced +
Spike architecture
ebracteate +
Spikelet arrangement
mixed +
Spikelet fixation
attached +
Spikelet quantity
1 +  and 60 +
Spikelet reproduction
viviparous +
Spikelet shape
compressed +
Spikelet some measurement
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Stamen quantity
1 +  and 3 +
Starch-grain architecture
simple +  and compound +
Style-branch atypical quantity
4 +  and 1 +
Style-branch quantity
2 (?) +  and 3 (?) +
Style quantity
2 +
Subsidiary-cell architecture
parallel-sided +
Synonyms
Gramineae +
Taxon family
Poaceae +
Taxon name
Koeleria pyramidata +
Taxon parent
Koeleria +
Taxon rank
species +
Terminal floret reproduction
sexual +
Tissue coloration
hyaline +
Tissue texture
membranous +
Upper glume architecture
3-veined +
Upper glume some measurement
0.5 cm5 mm <br />0.005 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
Vein arrangement
parallel +  and converging +
Vein presence
absent +
Vein quantity
2 (?) +
Vein size
major +
Volume
Volume 24 +
Whole organism architecture
rhizomatous +
Whole organism arrangement or pubescence
tufted +
Whole organism duration
perennial +
Whole organism growth form
plant +  and cespitose +
Whole organism growth form or habitat
aquatic +  and terrestrial +
X chromosome quantity
7 +